Dooby, Dooby, Moo by Doreen Cronin. Enough said.
If you have not yet enjoyed the hilarious tales of barnyard hijinks by Ms. Cronin (Giggle, Giggle, Quack; Click, Clack, Moo: Cows That Type; Duck for President; etc.) please do yourself a favor and high-tail it down to your local library or bookstore. Post haste!